The Mentalist's Patrick Jane is up to his old tricks, and that may not be a good thing.

Faux psychic, former CBI consultant, and newest member of the FBI's Austin based team, Jane (Simon Baker) is about to be granted full security access at his new job, despite his continuing shenanigans. As Teresa Lisbon (Robin Tunney), Agent Fischer (Emily Swallow), and Agent Abbott (Rockmond Dunbar) work on unraveling the cause of a pentagon worker's death in "The Golden Hammer," Agent Cho (Tim Kang) will be expressing his concern about Jane's behavior.

"You're acting like you used to act in the early days, and that makes me nervous," Cho tells his coworker in a new preview. "You were crazy."

The investigator's unconventional behavior won't be the only throwback to the Red John era in next week's episode. They don't feature in the promo, but Wayne Rigsby (Owain Yeoman) and Grace Van Pelt (Amanda Righetti) are slated to reappear, although it doesn't appear they will be working the same cartography related case as Jane and Lisbon.

As revealed in "My Blue Heaven," the married couple restarted their life after the CBI with a new baby and their own digital detective agency. At some point during "The Golden Hammer," the duo will begin to investigate and undisclosed conspiracy. It is unclear whether or not this case will feed into the character's upcoming departure from the series.

The Mentalist airs Sundays at 10 p.m. ET on CBS. Click the video below to see an extended preview of "The Golden Hammer."

Tags: The Mentalist CBS television